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Summary of Restructuring Liability by Segment (Detail) (USD $) In Thousands, unless otherwise specified | Jan. 31, 2015 | Oct. 31, 2014 | Apr. 30, 2014
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Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | $ 1,771 us-gaap_RestructuringReserve | $ 4,185 us-gaap_RestructuringReserve | $ 2,813 us-gaap_RestructuringReserve
Executive Recruitment |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 844 us-gaap_RestructuringReserve / us-gaap_StatementBusinessSegmentsAxis = kfy_ExecutiveRecruitmentMember |  | 572 us-gaap_RestructuringReserve / us-gaap_StatementBusinessSegmentsAxis = kfy_ExecutiveRecruitmentMember
Executive Recruitment | North America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 182 us-gaap_RestructuringReserve / us-gaap_StatementBusinessSegmentsAxis = kfy_ExecutiveRecruitmentMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember |  | 193 us-gaap_RestructuringReserve / us-gaap_StatementBusinessSegmentsAxis = kfy_ExecutiveRecruitmentMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember
Executive Recruitment | EMEA |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 662 us-gaap_RestructuringReserve / us-gaap_StatementBusinessSegmentsAxis = kfy_ExecutiveRecruitmentMember / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember |  | 379 us-gaap_RestructuringReserve / us-gaap_StatementBusinessSegmentsAxis = kfy_ExecutiveRecruitmentMember / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember
LTC |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 607 us-gaap_RestructuringReserve / us-gaap_StatementBusinessSegmentsAxis = kfy_LeadershipAndTalentConsultingServicesMember |  | 1,587 us-gaap_RestructuringReserve / us-gaap_StatementBusinessSegmentsAxis = kfy_LeadershipAndTalentConsultingServicesMember
Futurestep |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 316 us-gaap_RestructuringReserve / us-gaap_StatementBusinessSegmentsAxis = kfy_FuturestepMember |  | 654 us-gaap_RestructuringReserve / us-gaap_StatementBusinessSegmentsAxis = kfy_FuturestepMember
Corporate | Corporate |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 4 us-gaap_RestructuringReserve / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember |  |
Severance |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 640 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember | 2,445 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember |
Severance | Executive Recruitment |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 517 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_StatementBusinessSegmentsAxis = kfy_ExecutiveRecruitmentMember |  |
Severance | Executive Recruitment | North America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 182 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_StatementBusinessSegmentsAxis = kfy_ExecutiveRecruitmentMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember |  |
Severance | Executive Recruitment | EMEA |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 335 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_StatementBusinessSegmentsAxis = kfy_ExecutiveRecruitmentMember / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember |  |
Severance | LTC |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 67 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_StatementBusinessSegmentsAxis = kfy_LeadershipAndTalentConsultingServicesMember |  |
Severance | Futurestep |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 52 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_StatementBusinessSegmentsAxis = kfy_FuturestepMember |  |
Severance | Corporate | Corporate |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 4 us-gaap_RestructuringReserve / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember / us-gaap_RestructuringCostAndReserveAxis = us-gaap_EmployeeSeveranceMember / us-gaap_StatementBusinessSegmentsAxis = us-gaap_CorporateMember |  |
Facilities |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 1,131 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember | 1,740 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember | 2,813 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember
Facilities | Executive Recruitment |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 327 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_StatementBusinessSegmentsAxis = kfy_ExecutiveRecruitmentMember |  | 572 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_StatementBusinessSegmentsAxis = kfy_ExecutiveRecruitmentMember
Facilities | Executive Recruitment | North America |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve |  |  | 193 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_StatementBusinessSegmentsAxis = kfy_ExecutiveRecruitmentMember / us-gaap_StatementGeographicalAxis = us-gaap_NorthAmericaMember
Facilities | Executive Recruitment | EMEA |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 327 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_StatementBusinessSegmentsAxis = kfy_ExecutiveRecruitmentMember / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember |  | 379 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_StatementBusinessSegmentsAxis = kfy_ExecutiveRecruitmentMember / us-gaap_StatementGeographicalAxis = us-gaap_EMEAMember
Facilities | LTC |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | 540 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_StatementBusinessSegmentsAxis = kfy_LeadershipAndTalentConsultingServicesMember |  | 1,587 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_StatementBusinessSegmentsAxis = kfy_LeadershipAndTalentConsultingServicesMember
Facilities | Futurestep |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Restructuring Reserve | $ 264 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_StatementBusinessSegmentsAxis = kfy_FuturestepMember |  | $ 654 us-gaap_RestructuringReserve / us-gaap_RestructuringCostAndReserveAxis = us-gaap_FacilityClosingMember / us-gaap_StatementBusinessSegmentsAxis = kfy_FuturestepMember

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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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